>> break out the salsa, it's national taco day! a taco is a traditional mexican dish made with chicken, beef, vegetables or seafood. the filling is folded inside a soft or hard tortilla and topped with garnishes like salsa, cheese or avocado. according to the national taco day web site, americans ate 4-point-5 billion tacos last year. that equates to about 490- thousand miles of tacos, which could reach to the moon and back. coming up on the kron four >> morning news at five a- m. p-g-e is shutting down one pipeline, to ensure the safety of a bay area community. why officials say shutting it down will prevent another pipeline explosion from happening in the bay area. >> plus, the supreme court justices are headed back to work this morning, despite the government shutdown. >> coming up at 5-15, we'll tell you what is on the table for the new supreme court term. >> and president jimmy carter is in the bay area today-- focusing his attention on habitat for humanity. his visit comes just * days after a recent robbery at an oakland habitat for humanity location. details on his visit, coming up at 5:30.